[Qa-jenkins-scm] Build failed in Jenkins: reproducible_html_breakages #1135

[jenkins at jenkins.debian.net]

https://jenkins.debian.net/job/reproducible_html_breakages/1135/------------------------------------------
Started by user Holger Levsen
[EnvInject] - Loading node environment variables.
Building on master in workspace <https://jenkins.debian.net/job/reproducible_html_breakages/ws/>
[workspace] $ /bin/sh -xe /tmp/hudson6764586677414250635.sh
+ /srv/jenkins/bin/reproducible_html_breakages.py
INFO: Starting at 2017-01-21 21:38:43.696810
INFO: finding out which usertagged bugs have been closed or at least have patches
INFO: running alien_log check over /var/lib/jenkins/userContent/reproducible/debian/rbuild...
Traceback (most recent call last):
  File "/srv/jenkins/bin/reproducible_html_breakages.py", line 396, in <module>
    breakages = gen_html()
  File "/srv/jenkins/bin/reproducible_html_breakages.py", line 342, in gen_html
    entries=alien_log())
  File "/srv/jenkins/bin/reproducible_html_breakages.py", line 143, in alien_log
    bad_files.extend(alien_log(path))
  File "/srv/jenkins/bin/reproducible_html_breakages.py", line 150, in alien_log
    AND r.build_date < ''' + str(datetime.now()-timedelta(hours=12).strftime('%Y-%m-%d %H:%M')) + '''
AttributeError: 'datetime.timedelta' object has no attribute 'strftime'
INFO: Finished at 2017-01-21 21:38:45.817099, took: 0:00:02.120317
Build step 'Execute shell' marked build as failure